// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_INDEXED_DB_LEVELDB_LEVELDB_ITERATOR_IMPL_H_
#define CONTENT_BROWSER_INDEXED_DB_LEVELDB_LEVELDB_ITERATOR_IMPL_H_

#include <memory>

#include "base/macros.h"
#include "content/browser/indexed_db/leveldb/leveldb_iterator.h"
#include "content/common/content_export.h"
#include "third_party/leveldatabase/src/include/leveldb/iterator.h"

namespace content {

class CONTENT_EXPORT LevelDBIteratorImpl : public content::LevelDBIterator {
public:
    ~LevelDBIteratorImpl() override;
    bool IsValid() const override;
    leveldb::Status SeekToLast() override;
    leveldb::Status Seek(const base::StringPiece& target) override;
    leveldb::Status Next() override;
    leveldb::Status Prev() override;
    base::StringPiece Key() const override;
    base::StringPiece Value() const override;

protected:
    explicit LevelDBIteratorImpl(std::unique_ptr<leveldb::Iterator> iterator);

private:
    void CheckStatus();

    friend class IndexedDBClassFactory;
    friend class MockBrowserTestIndexedDBClassFactory;

    std::unique_ptr<leveldb::Iterator> iterator_;

    DISALLOW_COPY_AND_ASSIGN(LevelDBIteratorImpl);
};

} // namespace content

#endif // CONTENT_BROWSER_INDEXED_DB_LEVELDB_LEVELDB_ITERATOR_IMPL_H_
